Metropolitan Water District forecasts double-digit rate hikes amid rising maintenance costs and capital ambitions

Metropolitan Water District forecasts double-digit rate hikes amid rising maintenance costs and capital ambitionsThe Southern California wholesaler projects that inflation, deferred maintenance, and lower demands will drive significant rate increases in the 2027-2028 budget, even before accounting for the full cost of the Pure Water program or the Delta Conveyance.

MWD staff project an 18% total rate increase over the next two-year budget cycle just to maintain system integrity and fund deferred refurbishment.

The Capital Investment Plan (CIP) for existing infrastructure is expected to rise from $636 million to approximately $950 million in the next biennium.

Incorporating major future projects like Pure Water Southern California, Sites Reservoir, and Delta Conveyance planning would push the biennial rate increase to 23%.

The Pure Water Southern California Environmental Impact Report is slated for board approval in February 2026, with implementation decisions following in March or April.

Metropolitan Water District of Southern California (MWD) is facing significant upward pressure on water rates driven by inflation, supply chain volatility, and the need to address deferred maintenance, according to a financial outlook presented to the West Basin Municipal Water District on December 3. MWD Revenue and Budget Manager Arnaud Vandenberg outlined a challenging fiscal landscape for the upcoming 2027-2028 biennial budget. While the current approved budget anticipated rate increases, updated projections show that maintaining "current system integrity" without adding new water supply projects will ultimately require an 18% rate increase over the two-year period. Key drivers for this baseline increase include a reduction in projected water demands of 60,000 to 70,000 acre-feet, higher property taxes, and regulatory mandates such as the transition to zero-emission vehicles. Furthermore, MWD staff identified a critical need to increase the Capital Investment Plan (CIP) from its current $636 million to approximately $950 million to fund deferred refurbishment projects. While previous budgets successfully utilized rigorous condition assessments to maintain AAA credit ratings and cost efficiency at the lower spending level, the new outlook suggests those deferred needs can no longer be postponed. To mitigate immediate rate shock, staff proposed 100% debt financing for the increased CIP in the next biennium, slowly transitioning to 50% Pay-As-You-Go funding by 2034. The financial outlook becomes steeper when factoring in MWD’s potential investments in major water reliability projects. Vandenberg presented a scenario including the Pure Water Southern California (PWSC) program, the Sites Reservoir, and continued planning for the Delta Conveyance Project. If these projects proceed simultaneously, the projected rate increase for the next biennium would rise to 23%, with substantially higher increases anticipated in subsequent years as construction ramps up. Regarding the Pure Water program specifically, MWD Water Resources Team Lead Matt Hacker provided a concurrent update on the project's status. He confirmed that the Environmental Impact Report (EIR) is expected to be approved by the MWD board in February 2026. Subsequent decisions on implementation staging—determining whether to build the facility in phases or at full capacity—are expected in March or April 2026. Hacker also noted that to maximize the Pure Water facility's output to 92% of its capacity, MWD needs to acquire a new recharge basin. Without a dedicated basin, the system would be limited to approximately 70% capacity due to constraints at existing Los Angeles County facilities during wet periods. MWD has identified potential sites, including the Vulcan Reliance and United Rock Pit locations, which analysis suggests would yield a positive return on investment within six to 12 years. MWD’s Assistant General Manager and Chief Financial Officer Katano Kassane emphasized that the current analysis was not a proposal to approve these major projects immediately, but rather to provide context for the board's upcoming decisions on trade-offs between affordability and reliability. The board is expected to take action on the biennial budget and rates in mid-April 2026.